nine to the inch: piano roll perforators in Buffalo, New York

Piano roll perforators

We cut piano rolls in Buffalo, New York: 88-note, 11¼ inches wide, holes nine to the inch. That is the size agreed in this city in 1908, so a roll from us plays on any player piano built to it.

On the perforator: Study No. 1, a canon in four tempi. One foot of paper, 160 holes.

  • Cut
  • Under the punch
  • Pencil, still to cut
  • Wrong hole, taped

Cutting to order:
[email protected]
(716) 555-0108

Buffalo, N.Y.
2026.

( 01 ) The standard

On 10 December 1908 the makers of player pianos met in Buffalo and agreed one roll: 11¼ inches wide, 88 holes at nine to the inch. Every roll we cut is still that roll.

Paper width11¼in

286 mm, with margins left at both edges for later inventions.

Holes to the inch9

88 tracks, one for each key. The older 65-note rolls had six to the inch.

Tempo 707ft/min

A roll's tempo marking is its speed: seventy means seven feet of paper a minute.

On the bench

( 05 )

How a roll is cut

Score

Notes as printed: a pitch and a length each. We start from the published score or your MIDI file.

  1. 01Score
  2. 02Pencil
  3. 03Stencil
  4. 04Copies
  5. 05Tracker bar

01Score

Notes as printed: a pitch and a length each. We start from the published score or your MIDI file.

02Pencil

Each note is marked on the master stencil in pencil, on its own track, nine tracks to the inch.

03Stencil

The perforator cuts the master. Short notes are single slots; long ones are chains of overlapping punches.

04Copies

Copies are cut from the master stencil five sheets at a time, then trimmed to 11¼ inches and spooled.

05Tracker bar

Each roll plays through once before it ships. A hole sounds while it is open over the tracker bar.

What it costs

US dollars, shipping extra. Rolls travel spooled, in a tube.

Before you order

Next See the five rolls

Each with its leader, every hole of its first bars and the numbers that matter: tempo, length, price.